Q: What are the prime factors of the number 223,560?

 A: 2, 3, 5, 23

Why are those the prime factors of the number 223,560?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 223,560

223,560
Factor Arrows
2111,780
Factor Arrows
255,890
Factor Arrows
227,945
Factor Arrows
39,315
Factor Arrows
33,105
Factor Arrows
31,035
Factor Arrows
3345
Factor Arrows
3115
Factor Arrows
523

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 5, 23

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 3 x 5 x 23 = 223,560

This can also be written as 23 x 35 x 51 x 231 = 223,560

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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